diff --git a/src/xrt/drivers/CMakeLists.txt b/src/xrt/drivers/CMakeLists.txt
index 6aaef2719..8c367f7bc 100644
--- a/src/xrt/drivers/CMakeLists.txt
+++ b/src/xrt/drivers/CMakeLists.txt
@@ -84,12 +84,14 @@ if(BUILD_DRIVER_VIVE)
 		vive/vive_prober.h
 		vive/vive_prober.c
 		vive/vive_protocol.h
+		)
+	set(NXJSON_SOURCE_FILES
 		../../external/nxjson/nxjson.h
 		../../external/nxjson/nxjson.c
 		)
 
 	# Use OBJECT to not create a archive, since it just gets in the way.
-	add_library(drv_vive OBJECT ${VIVE_SOURCE_FILES})
+	add_library(drv_vive OBJECT ${VIVE_SOURCE_FILES} ${NXJSON_SOURCE_FILES})
 	target_include_directories(drv_vive SYSTEM PRIVATE ../../external)
 	target_link_libraries(drv_vive z)
 endif()